7776116777 has 8 divisors (see below), whose sum is σ = 9135577920. Its totient is φ = 6525412560.

The previous prime is 7776116749. The next prime is 7776116837.

It is a happy number.

7776116777 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7776116777 - 2²⁶ = 7709007913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7776115777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27189077 + ... + 27189362.

It is an arithmetic number, because the mean of its divisors is an integer number (1141947240).

Almost surely, 2^7776116777 is an apocalyptic number.

It is an amenable number.

7776116777 is a deficient number, since it is larger than the sum of its proper divisors (1359461143).

7776116777 is a wasteful number, since it uses less digits than its factorization.

7776116777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54378463.

The product of its digits is 4235364, while the sum is 56.

The square root of 7776116777 is about 88182.2928767448. The cubic root of 7776116777 is about 1981.1662667038.

The spelling of 7776116777 in words is "seven billion, seven hundred seventy-six million, one hundred sixteen thousand, seven hundred seventy-seven".